Retarded self-closing valve



Patented June 1 6, 1942 UNITED STATES PATENT OFFICE James F. Molloy, Oakland, Calif.

Application February 28, 1941, Serial No. 380,976

4 Claims. (Cl. 131-139) tional external design of valves, and particularly to lavatory faucets.

Another object is the provision of an improved external mechanism that may be substituted in appropriate types of valve bodies now installed.

A further object is the provision .of a valve that may be opened with a light manual touch, regardless of the service pressure, and that will close without water hammer or other reactions.

Other objects and advantages will appear as.

the description progresses.

In the one sheet of drawings the figure i a vertical section of a lavatory faucet constructed in accordance with this invention.

In detail the construction illustrated in the drawing comprises the valve body having the threaded inlet neck 2 extending below the flat base 3. The neck is provided with the running nut ti by means of which the faucet may be installed on a wash basin, in the usual manner.

In the present instance the body has the transverse partition with a central opening with a tapered seat at 6. The discharge spout 1 extends outwardly from the body above the partition 5. The upper portion of the body is closed by the annular sleeve 8 threaded on the externally threaded top 9 of the body. This top portion 9 is internally bored to form the concentric guide l0, extending inwardly of the body The sleeve 9 is counterbored at H to form the chamber i2, beneath the concentric guide l3 extending above this chamber, and of less diameter than the chamber. The stem I4 is concentrically. centerbored at l5'to the bottom I6 and has the external flange |1 slideable within the chamber l2. The top 8 of the stem is threaded into the push handle l9 that is counterbored at 2| to telescope freely over the concentric top 20 of the sleeve.

The cylindrical valve housing 22 snugly fits within the guide It and its lower end is shaped to make a water tight fit with the seat 8. Except for convenience in fabrication and replacement this housing is functionally a part of the .partition 5 and may be connected therewith in any suitable manner. The bottom 23 of this 1 housing is internally recessed at 24 to form the destructive valve seat 25, for the resilient valve 26 fixed in the lower end ofthe independent valve piston 21, that is freely slideable within the cylindrical bore 28 of the housing 22. The bottom 23 is provided with a plurality of longitudinal holes such as 29 extending therethrough.

The walls of the housing 22 are preferably of sufficient thickness to permit the boring of the by-pass hole 30 longitudinally thereof from the top to near the bottom 23. This by-pass has a lateral hole 3| extending from the counterbore 24 through the wall of the housing and into the space within the body above the partition 5. There are three or more of these lateral holes such as 32, that are interspaced with the vertical holes 29.

The upper end of the housing is counterbored at 33 to receive the plug 34 that has a vertical flange 35 snugly fitting within the cylindrical center bore 28 of the housing. The upper end of this plug lies beneath the shoulder 36 of the sleeve 8, by which the housing is pressed against the seat 6. This plug has the vertical neck 31 extending upwardly into the center bore I5 from which it is concentrically spaced. This neck is internally threaded to receive the spring seated valve assembly inclusively designated by the number 38 and sealed within the neck 31. It has a seat for the valve 39 on the end of the spring urged plunger 40 extending above the neck 31 and into contact with the bottom i6. This valve assembly 38. just described, is similar to the conventional Schrader air valve used in pneumatic tires.

This invention operates substantially as follows: The valve at 26 is normally closed by the service pressure in the chamber 4| beneath the closed valve 39. When the handle I9 is depressed the shoulder 2| stops against the neck 31, and the pressure is instantly released through the valve 39, and the piston 21 is forced upwardly against the plug 34, by the inrush of pressure the piston 21 into the chamber ll and the piston 2! begins to descend. The superficial area of the top of the piston being greater than the area of the valve opening at 25, the built up pressure gradually reseats the valve 28 and stops the flow.

The delayed descent of the piston 21 determines the period of the cycle between the opening of the valve 39 and the closing of the valve 26. This period may be predetermined by the capacity of the chamber 4|. I! it is desired to shorten the interval of the cycle displacement discs may be introduced above the piston or the capacity of the chamber 4i may otherwise be lessened.

,1! a continuous flow is desired through the spout I, the handle 19 is held down, which maintains a constant flow through the valve 39 and prevents the building up or the closing pressure in the chamber 4|.

Having thus described this invention what is claimed and desired to secure by Letters Patent is 1. A valve in the class described including a body having a partition therein and an inlet and an outlet on opposite sides of said partition respectively; a valve housing rising from said partition and having an internal chamber closed at both ends except for an inlet and an outlet at the top and bottom respectively; and having a recess with a side outlet through the wall of said housing and communicating with a by-pass extending longitudinally through said wall and leading to an enclosed space in the body above said housing; a spring urged valve in said space therein. I

3. A valve in the class described including a body having a partition therein and an inlet and an outlet on opposite sides of said partition respectively; a valve'housing rising irom said par tition and having a chamber therein with an inlet through said partition; a plug closing the top of said chamber and having a neck with a centerbore therethrough open to said chamber; a hollow stem telescoping over said neck and having an annular flange thereon; a sleeve engaging the top of said body and having an annular controlling the top outlet from the chamber in said housing; external means for operating said I valve; and an independent valve guided in said tition and having a chamber therein with an inlet through said partition; a plug closingthe top of said chamber and having a hollow neck open to said chamber; a sleeve engaging the top of said body and bearing against said plug; a spring urged valve in said neck and having a protrud-v ing plunger; handle means engaging said plungshoulder overhanging said plug and a counterbore slide'ably guiding said stem and a shoulder engaging said flange; a spring seated valve in said neck and having a plunger engaging the bottom end of the counterbore in said stem; a valve seat in the bottom of said housing and having a recess thereunder with a lateral outlet.

above said partition and communicating with a by-pass leading to the space above said plug; and I a valve guided in said chamber within the housing and cooperatingv with said valve seat.

4. A valve in the class described including a body having a partition therein and an inlet and an outlet on opposite sides of said partition respectively; avalve housing rising from said par-.

tition and having an internal chamber closed at both ends except for an inlet and an outlet at the bottom and top respectively and having a reand an independent valve piston guided in said chamber and adapted to close said recess.

JAMES F. MOLLOY. 

